Warren wood



(No Model.)

W. WOOD.

TRIPOD No. 497,042. .Patehted May 9, 1893.

NVENTOH fimm W W/T/VESSES.

NITED STATES PATENTi-iOFFFICE WARREN WOOD, or PATERSON, NEW JERSEY, ASSIGNOR To SAMUEL-c. MUKIERNAN, OF SAME rLAcE.

TRIPOD.

SPECIFICATION forming part of Letters Patent No. 497,042, dated May 9 1893. Application filed November 29, 1892. Serial 110.453.481. (N0 modeli) ments in Tripods ;and I do hereby declare the foii' ping to be a full, clear, and exact description firthe invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference beinghad to the accompanying drawings, and to letters and figures of reference marked thereon,which form a part of this specification.

My invention relates to new and useful improvements in tripods for rock drills and similar machinery, and it consists essentially in the novel construction and arrangement of the front and rear leg holders and their connection with the shaft of thetripod; it further consists in the clamping device,and in the construction and arrangement of parts hereinafter more fully described and claimed. In the drawings similar letters and figures indicate similar parts throughout the several views.

Figure l isa sideelevation of the improved tripod. Fig. 2 i'sacross sectiontaken on the line a: a: of Fig. 1. Fig. 3 is a detail View ofa certain connecting piece or link. Fig. dis a side elevation of the clamping device for the drill, attached to theshaft of the tripod, and Fig. Sis a cross section taken on the line y-y of Fig. 4.

In said drawings (1 represents a spindle or shaft, provided at each'end with a bolt b, preferably made integral with the spindle. Secured to or made integral with said spindle are lugs 0, adapted to be engaged by the slotted or forked portions d. of yoke e, to which latter the rear leg 2 of th'e'tripodis secured in any desired manner. To each of the bolts 3) is pivotally secured a disk f held in position by nut g and washer h. Depending from said disk and at. approximately right angles thereto is arrangeda projection or disk 2',t which latter the circular end or disk 7; of front leg :m is pivotally secured by a. bolt 71 and its respecti etightening nut, as clearly shown in Fig. 1 of the drawings.

The engaging faces of the disks iand k are radially corrugated or roughened, so that faces of diskfand tion-0t the tripod, that the front legs when the nuts of bolts n are tightened, the front legs are prevented from turning, and the vibration and strain exerted on the tripod by the operating drill, will not as easily unloosen said nuts, as it does on otherwise constructed tripods. Preferably the engaging of the forked portion-d of yoke e are similarly corrugated for the same purpose, as hereinbeforedescribed. It will be seen from this arrangement and construcm may turn upon the bolts 1) of. spindle. a and that 1 they have" also an independent movement about the bolt .11.. The yoke e, on account or its slotted or forked portions d engaging the bolts b and lugs c of spindle a can be tur'hed with said spindle a (when the nuts 9 are loosened), or can be entirely'withdrawn from said spindle, if desired.

To the shatter spindleaof the tripod is at tached the clamping device 0', consisting of split sleeves 19, whose cured together by bolts q, as clearly shown in Fig. 5 of the drawings. The upper portion 1' of said sleeve is lugs s, to and between which is .pivotally. se-

cured a clamping block t', provided with an elongated slot u. The top of thenpper portion 1' of-the sleeve is flattened and is. provided with a circular flange 2;, adapted, in'

passes a bolt w, provided. with a nut 2, by

means of'which the clamping block t is oper: I

ated and controlled.

- Having thus described my inventioi nlwhat parts are firmly seprovided ,with projecting machinery. Through portion 7' and elongated slot to Irclaim as new, and desire to secure by Letters Patent, is-

1. In a. tripod the combination "with the U shaft and its pro ecting bolts, of lugs made integral with said shaft, front leg holders pivotally arranged on said bolts, and a rear leg holder substantially in the shape of av yoke, the outer ends of said yoke with forked portions,

bolts and the projecting lugs of the shaft, sub: stantially as. and for the purposes set forth. I 2. -'In a tripod, the combination of. .-the shaft and itsprojectingbolts, with lugs made iii-f teg'ral with said shaft, disks f, carrying-the.

9 I be ng provided adapted to-engage' the.

front leg holders, said disks being pirotally arranged on the projecting bolts, with yokee carrying the rear leg 2, said yoke being pro-.

vided with forked portions. adapted, to engage the bolts and the projecting lugs of the shaft, the engaging faces of said disksfand yoke e beingradially corrugated or roughened, and with nuts adapted to clamp said disks f and yoke 6 together, all said parts, substantially as and for the purposes described.

3. In a tripod, the combination of the shaft, its projecting bolts and the front leg holders pivotally arranged onsaid bolts, and with a yoke carrying the rear leg, said yoke being provided at its outer ends with forked p0rtionsd, adapted to engage the projecting bolts of the shaft, substantially as and for the purposes specified.

4. In a tripod the combination with the shaft, of bolts arranged on each end of said shaft, disks pivotally arranged on said bolts and provided with downwardly extending disks 1', to which are pivotally secured the disks k of the front legs m,a yoke e carrying the rear leg 2 and provided with forked por tions, adapted to engage'the bolts 12, the engaging faces of disks f and yoke e and also of disk 1' and disks k being radially corrugated, all said parts substantially as and for the purposes described.

In testimony thatI claim the foregoing I have hereunto set my hand this 22d day of November, 1802.

, VARREN WOOD.

Witnesses:

ALFRED GARTNER, WALTER THOMPSON, 

